Trade retaliation is generally executed on commodities that are already unfairly subsidized by the opposing nation. I'm thinking of disputes over tires, steel,

Trade retaliation is generally executed on commodities that are already unfairly subsidized by the opposing nation. I'm thinking of disputes over tires, steel, pork, beef, corn. Banning a service company that seems to have done nothing wrong as a means of tit-for-tat retaliation is different.